Floor cleaning machine with an additional fluid nozzle with connector and suction by-pass

In a floor-cleaning machine having a brush, an inlet duct for introducing cleansing fluid, a supply valve means for controlled dispensing of said cleansing fluid, a sprayer for discharging the cleansing liquid relative to the brush, and dirty liquid suction ducts which are oriented on opposite sides of the brush and which are in open communication with a connecting duct which communicates with a suction outlet for dirty liquid, the improvement comprising:

• an additional suction nozzle including a suction conduit having a by-pass connector manifold joined at one end of said conduit which is selectively insertable within the connecting duct, said connector manifold having an opening therein for communicating said suction conduit of said additional suction nozzle with the suction outlet, a pipe element extending from said connector manifold and insertable within the supply valve means so as to direct cleansing fluid therethrough when said connector manifold is inserted within the connecting duct, and
• a fluid cleansing duct connected to said pipe element and extending within said suction conduit of said additional suction nozzle, whereby upon insertion of said by-pass connector manifold within the connecting duct, suction is established through said suction conduit of said additional suction nozzle and said cleansing fluid is provided through said pipe element and said fluid cleansing duct.